Can opener



1,635,649 July 1927' c. w. TILLMANNS CAN OPENER Filed July 28. 1924'INVENTOR. Gar! 11/. 771101111148 Patented July 12,1927.

UNITED STATES PATENT OFFICE.

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CAN OPENER.

Application filed July 28, 1924. Serial No. 728,689.

This invention relates to can-ppeners and for the purpose ofillustrationis shown as applied to a can-opener pivoted to. a combination tool orkni e. O

I ()nc object of the invention is to provide a can-opener comprising aback and a blade of diiferent materials, whereby the mostdesirablematerial for each part may be used.

A furthenobject of the invention 15 130 provide a can-opener adapted foreffective use on either cans with rims, or rimless cans.

A further object of the invention is to providea can-opener havingseparate back and blade, each comprising a tang, and

means associated with said tangs for pivoting said can-opener to ahandle, and for securing said blade and back together.

With these and other objects in.view my invention consists in the novelcombinations and arrangements of parts which are illustrated in thedrawings and will be herein after described. 1 1

In the drawings,

Fig. 1 is a view of a comb nation tool embodying a can-opener comprisingmy invention.

Fig. 2 shows longitudinal and end eleva t-ions and a plan of thecan-opener back. Fig. 3 shows a plan and an elevation of so thecan-opener bla e.

Fig. 4. shows a plan and an elevation of the complete can-opener,removed from the handle.

Numeral 5 designates the can-opener blade, which comprises a tang 6,perforated at points 7 8, and 81. The perforation 7 is adapted toreceive the pivot pin 9 which joins the can-opener to the knife handle.The perforations 8 and 81 are adapted to receive rivets which join theblade to the can-opener back. The back 10 comprises a tang 11 of thesame size and shape as the tang 6, and comprises perforations 11', 12,and 121 located to align respectively with 4 perforations 7, 8 and 81when the tangs 6 and 10 are superposed. The back 10 also comprises alateral extension, 13 adapted to engage the rims of cans provided withrims, and a vertical projection provided with a roughened or serratedface 14, adapted to engage the surface of rimless cans. The face 14 islocated somewhat below the bottom face of the lateral extension 13,thereby insuring the contact of the serrated friction face 14 with thesurface of a rimless can.

The use of separate elements for the blade and back ermits the selectionof different materials or these parts. This is of great importance. Thefunction of the blade is to out, while the function of the back is tosupply a supporting lever for the cuttin edge, hence it is obvious thatthe materia most suitable for a back will be altogether unsuitable for ablade. The forming of these two parts separately permits the selectionfor each part of a material especially ada ted for the function to beperformed thereby The blade may be made of a hard high carbon steelwhich will permanently retain a sharp cutting edge, while the back maybe made of a softer and tougher spring steel. An e rtraordinarilyefiicient can-opener is thus insured. The method of joining the bladeand back, comprising supporting them from the same pivot, and oiningthem with rivets at two other points insures a rigid and permanentconnection between them.

The invention is not to be considered as limited to the precise formherein described and illustrated in the drawings, but is to be construedas covering all equivalent devices falling within the scope of theappended claims.

I claim:

1. A can-opener comprising a blade and a back formed as separateelements said blade and back respectively comprising tangs adapted to besuperposed, a pivot pin adapted to pass thru aligned openings in saidsuperposed tangs, and means other than said pivot pin, associated withsaid tangs for securing said blade and back against relativedisplacement.

2. A can-opener comprising a blade and a back formed as separateelements and comprising respectively tangs of similar size and shape,means for securing said tangs together at a plurality of points, saidsecuring means comprising in part a pivot common to blade and back.

3. In a combination tool, a can-opener comprising a handle and separableblade and back elements, said back element being provided with means forengaging the rim of a can provided with a rim, and other Iiieans ments,said blade and back respectively comfor engaging the fiat surface of arimless prising tangs of similar size and shape 10 can means forsecuring said blade and back adapted to superposed, pivot means, andelements against relative displacement com-- means securing said bladeand back against 5 prising in part a device for pivotally securrelativedisplacement associated with said and can-opener to said handle. tangs.

A combination tool comprisin a cane opener having separable blade andack ele- CARL W. TILLMANNS.

